Duriba fi zaman al-abd al-rafi rahmat allah muhammad bin // al-sultan al-sa'id al-shahid tughluq shah, fi saneh arbain wa deb miat. 20mm, 9.11 grams. NM (Delhi?), dated (with the date written out) to 729 AH (1328 AD). Goron/Goenka #D370.

Nice and attractive example. 

Muhammad bin Tughluq was born to Ghiyas-ud-din Tughlaq, who was in turn the son of a Turkic slave father and a Hindu Indian mother, and was the founder of the Tughluq dynasty after taking control of the Delhi Sultanate. He saw a long and eventful reign - numismatically, he left a fascinating record which included numerous coin types which included remarkable issues of fiduciary bronze tankas and half-tankas.